Laundromat is a community lot assignment introduced in The Sims 3: Ambitions. Sims can go to these lots to wash their clothes, benefiting from the laundry system introduced in Ambitions. To do laundry at a laundromat, zoom the camera there and interact with one of the washing machines. Your Sim will gather laundry and take it to the laundromat where they will be charged a fee. The higher quality machines charge more and aren't eco-friendly, but offer better moodlets and a small chance of finding the mysterious laundry gnome.